[rhelv6-list] Removing sendmail - how to satisfy MTA requirement?

[Paul Reilly]

Hello,

The version of postfix which comes with RHEL 6 is very old, postfix version
2.6, and does not contain the features I want. So I have installed postfix
2.10  from source code.  Next, I would like to remove sendmail from this
server, and use the source compiled postfix as our MTA.  However if I try
to remove sendmail, yum tries to remove lot's of other critical packages
like crontabs and redhat-lsb-core.  How do I remove sendmail and let the
package manager know that I have an MTA installed, so it doesn't try and
remove these packages?


# yum erase sendmail
...
Dependencies Resolved

==================================================================================================================================================================
 Package                           Arch
Version
Repository                                                             Size
==================================================================================================================================================================
Removing:
 sendmail                          x86_64
8.14.4-8.el6
@rhel-6-server-rpms                                                   1.5 M
*Removing for dependencies:*
 cronie                            x86_64
1.4.4-12.el6
@rhel-6-server-rpms                                                   174 k
 cronie-anacron                    x86_64
1.4.4-12.el6
@rhel-6-server-rpms                                                    43 k
 crontabs                          noarch
1.10-33.el6
@anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2               2.4 k
 libcgroup                         x86_64
0.40.rc1-5.el6
@rhel-6-server-rpms                                                   321 k
 redhat-lsb-core                   x86_64
4.0-7.el6
@rhel-x86_64-server-6                                                  22 k
 redhat-lsb-graphics               x86_64
4.0-7.el6
@rhel-x86_64-server-6                                                 0.0
 sysstat                           x86_64
9.0.4-22.el6
@rhel-6-server-rpms                                                   824 k

Transaction Summary
==================================================================================================================================================================
Remove        8 Package(s)




Thanks

Paul
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